Quasiequilibrium supersolid phase of a two-dimensional dipolar crystal
arXiv:1004.0806 · doi:10.1103/PhysRevB.82.014508
Abstract
We have studied the possible existence of a supersolid phase of a two-dimensional dipolar crystal using quantum Monte Carlo methods at zero temperature. Our results show that the commensurate solid is not a supersolid in the thermodynamic limit. The presence of vacancies or interstitials turns the solid into a supersolid phase even when a tiny fraction of them are present in a macroscopic system. The effective interaction between vacancies is repulsive making a quasiequilibrium dipolar supersolid possible.
5 pages, 4 figures
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- Quantum phase transition of a two-dimensional quadrupolar system
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- Density-wave-type supersolid of two-dimensional tilted dipolar bosons
- Stationary waves in a superfluid gas of electron-hole pairs in bilayers